Tack or nail



C. K. HILL.

TACK 0R NAIL- APPLICATION FILED AUG.3.,19I6.

1,395,960. Patented Nov. 1, 1921.

a Hul 7 H96 WITNE-65= IN VENToE 6W -@J W chm 1mm H'rrorzNEysg7 wm @6 UNITED, STATES CHARLES K. HILL,

PATENT OFFICE. OF CLEVELAND, OHJ IO, AsSIGNOR TO THE E. G. TACK COMPANY, OF

CLEVELAND, OHIO, A CORPORATION OF OHIO: v

TACK on NAIL. A

Specification of Letters Patent.

Patented Nov. 1, 1921.

Application filed'August 3, 1916. Serial No. 112,936.

To all whom it may concern:

Be it known that I, CHARLES, K. HILL, a

of Cleveland, county of Cuyahoga, and State of Ohio, have invented a, new and useful Improvement in Tacks or Nails, of which the following is a specification, the principle of the invention being herein explained and the d best mode in which I have contemplated applying that principle, so as to distinguish it from other inventions.

The present tack or nail is an improved form of the so-called furniture tack, which is characterized by having a rounded head hollowed out on the under side so as to enable the head to lie close against the upholstery or other material through which it is driven. Heretofore, tacks of this sort have been universally fashioned out of two pieces, the head, which is usually of brass, being stamped up separately from the body or shank, and the latter then cold swaged,

or otherwise fixedly attached to the inside of the head. This construction not only pre sents serious difiiculties in manufacture,

which have tended to limit the use of tacks of this kind because of the expense, but such construction .has not been satisfactory from a mechanical standpoint, since the head is more or less easily separated from the shank, and particularly when it is attempted to withdraw the tack, such head comes off leaving the shank behind, causing great annoyance. a

The object of the present invention is to provide a tack of this general'type, fashioned out of one integral piece of metal, and so designed as to enable the article to be made from a continuous rod or wire in the same general way as ordinary tacks and nails are manufactured. To the accomplishment of the foregoing and related ends, said invention, then, consists of the means hereinafter fully described and particularly pointed out in the claim.

The annexed drawing and the following description set forth in detail certain structure embodying the invention, such disclosed means constituting, however, but one of various mechanical forms in which the principle of the invention may be used.

In said annexed drawing Figure l is a side elevational view of a tack embodying my present improved construction; Fig. 2 is a vertical section of such tack on a somewhat-larger scale, the plane of the section being a trifle to one side of the citizen of the Unlted States, and a res1dent\ax1s of the shank, as indicated by the lines .taken at right angles to that of Fig. 2, as

indicated b Fig. 4 is a b lndlcated by the section line 4 4, Figs. 2 and 3, respectively; Fig. 5 is a vertical sec t1on s milar to that of Fig. 2, but showing a modified construction of the head; and Fig. 6 1s another vertical section similar to that of Fig. 2, showing still a third form of head.

The present improved'construction of tack embodies, as indicated above, a shank 1 having ahead 2 integral therewith, in contradlstinction to the familiar type of furniture tack in which such head is a separate stampmg mechanically affixed to the upper end of the shank.

Thebody of the shank 1 is shown as of typlcal form, it being understood that the point 3 may be differently shaped and that the corrugations 4 on the sides omitted if desired.

The head, which is the feature of particuthe lines 3- -3, Figs. 2 and 4;

lar interest, may take on various external shapes, the more usual umbrella or basinlike figures being shown in Figs. 1 to 5 inclusive, while in Fig. 6 the head has the shape of a truncated cone.- The difference between the form illustrated in Fig. 5 and the preceding figures, which externally is the same as that in Fig. 5, is that the periphery 5 of the head is shown as turned. in slightly so as to present a rounded surface for contact with the material, through or against which the tack is driven.

Whatever the shape of the head, it is designed to be formed by upsetting the end of the rod or wire, out of which the shank is fashioned, either before or after such shank has been severed from the latter, such head being givenits concave form incidentally to such upsetting operation. It is accordingly obviously left an integral part with the shank and presents all the desirable features ottom plan view of the head, as

of stability and strength possessed by the integral head of an ordinary tack or nail.

In addition to thus forming such head integrally with the body, I preferably, although not necessarily, form the head on the under side with a plurality of radially disposed strengthening ribs or webs 6. Two

such webs are shown in the several forms of the tackillustrated, but it will be understood that the number may be increased if desired. These webs, as shown in Fig. 2, are relatively shallow and slope downwardly and outwardly so as not to interfere with the desired close contact of the head with the material through which it is driven and serving to move the material inwardly toward the shank. At the same time they add materially to the rigidity of the head, permitting the same to be made correspondingly lighte'r and still withstand the hammer blows to which the tack is subjected when being used.

I therefore particularly point out and distinctly claim as my invention 2- As a new article of manufacture, a tack or nail comprising a shank, a head of generally rounded external form and hollowed out on its under side so as to leave a relatively thin shell, and radial ribs on the under side of said head, said ribs sloping downwardly and outwardly and lying entlrely within said head, the peripheral edge ofthe latter being turned inwardly, and said head and ribs being fashioned from the material of said shank and remaining integral therewith, substantially as described.

1 iisgned by me, this 2nd day of August,

CHARLES K. HILL.

Attested by THos. H. FAY,

F. M. RECHTENWALT. 

